KitSoundwave

FOR X: substitute -3x+5 in terms of y and add 20 to both sides and divide both sides by 17 to get x=1

FOR Y: substitute 1 in terms of x and simplify to get y=2

subtract 12 from both sides and divide both sides by -8 to get z=3

756/12=63 miles/hr

63*567=35721 min

hoo boy. please don't tell me this is a joke

1) 6^2=36 and 3^3=27 so 36-27=9

2) the first two positive even numbers are 2+4=6 (note: 0 is a neutral number) 

5624/8=703

No, they're asking how many times 60 goes into 276, so the answer must be a whole number. 

276/60=4 R36 so the answer is 4

factor to get x(x-1)(x-4)=0 so the answer is: 

 (0, 1) U (4, infinity)

using this as a system of inequalities for a solution won't work because for some reason web2.0calc can't render it

just convert (0, 1) U (4, infinity) into a system of inequalities for a solution if that's what you're looking for

348/50=6 R48 so the answer is 6. Almost 7 though :)

start by converting 2 1/4 into a common fraction = 9/4

5/6*9/4=45/24

a permutation is like you want to select x people from a group of y people

the formula is x*(x-1)*(x-2)*...../y!

(e.g. 4 people from 12 people) 

12*11*10*9/4! = 11880/24=495 (ways)